Radtkeite Mineral Data

General Radtkeite Information

Chemical Formula:

Hg3S2ClI

Composition:

Molecular Weight = 828.26 gm

Mercury 72.65 % Hg 78.45 % HgO

Sulfur 7.74 % S 7.74 % S^2-

- % S -3.86 % -O=S

Iodine 15.32 % I 15.32 % I

- % I -0.97 % -O=I₂

Chlorine 4.28 % Cl 4.28 % Cl

- % Cl -0.97 % -O=Cl₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Hg₃S₂ClI

Environment:

Secondary Hg mineral.

IMA Status:

Approved IMA 1991

Locality:

McDermitt mercury mine, Humboldt County, Nevada, USA. Link to MinDat.org Location Data.

Name Origin:

Named for Arthur S. Radtke (1936-2004), geologist, U. S. Geological Survey.

Name Pronunciation:

Radtkeite + Pronunciation

Synonym:

IMA1989-030

Radtkeite Image

Images:

Radtkeite Corderoite

Comments: SEM image of prismatic radtkeite crystals and equant corderoite crystals on quartz matrix. AmMin, v76:1715).
Location: McDermitt mercury mine, Humboldt County, Nevada, USA. Scale: Scale Bar 10 µm.
© American Mineralogist

Radtkeite Crystallography

Axial Ratios:

a:b:c =1.8456:1:1.444

Cell Dimensions:

a = 16.827, b = 9.117, c = 13.165, Z = 8; beta = 130.17° V = 1,543.30 Den(Calc)= 7.13

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.54(1), 2.65(0.85), 3.89(0.48),

Physical Properties of Radtkeite

Cleavage:

{010} Perfect, {001} Very Good, {100} Very Good

Color:

Bright yellow orange, Orange.

Density:

Diaphaneity:

Translucent to Opaque

Fracture:

Hackly - Jagged, torn surfaces, (e.g. fractured metals).

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

2-3 - Gypsum-Calcite

Luster:

Adamantine

Streak:

yellow orange

Optical Properties of Radtkeite

Gladstone-Dale:

CI meas= 0.013 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.031 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1403,KPDmeas= 0.1429,KC= 0.1448
Ncalc = 2.01 - 2.03

Optical Data:

Biaxial (+), b=2

Calculated Properties of Radtkeite

Electron Density:

Bulk Density (Electron Density)=5.78 gm/cc
note: Specific Gravity of Radtkeite =7.00 gm/cc.

Fermion Index:

Fermion Index = 0.21
Boson Index = 0.79

Photoelectric:

PE_Radtkeite=1,308.53 barns/electron
U=PE_Radtkeite x rElectron Density=7,564.32 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Radtkeite is Not Radioactive

Radtkeite Classification

Dana Class:

10.03.06.01 (10)Oxyhalides and Hydroxyhalides

(10.03)where (A)3 (O,OH)2 Xq

(10.03.06)Dana Group

10.03.06.01 Radtkeite Hg3S2ClI C 2/m 2/m

Strunz Class:

02.FC.15d 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.F - Sulfides of Arsenic, Alkalies; Sulfides with Halide, Oxide, Hydroxide, H2O

02.FC -With Cl, Br, I (halide-sulfides)

02.FC.15d Radtkeite Hg3S2ClI C 2/m 2/m

Other Radtkeite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8, AmMin 89:1833) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Radtkeite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Print or Cut-and-Paste your Radtkeite Specimen Label here :

Radtkeite

Hg3S2ClI
Dana No: 10.03.06.01 Strunz No: 02.FC.15d
Locality:

Notes:

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